### Home Classes Methods

### In Files

- lib/chef/provider/route.rb

### Parent

Chef::Provider

### Methods

- #action_add
- #action_delete
- #config_file_contents
- #generate_command
- #generate_config
- #hex2ip
- #load_current_resource
- #whyrun_supported?

### Included Modules

- Chef::Mixin::Command

### Files

- LICENSE
- README.rdoc

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# Chef::Provider::Route

### Constants

MASK

### Attributes

is_running[RW]

### Public Instance Methods

action_add() click to toggle source

    # File lib/chef/provider/route.rb, line 129
    def action_add
      # check to see if load_current_resource found the route
      if is_running
        Chef::Log.debug("#{@new_resource} route already active - nothing to do")
      else
        command = generate_command(:add)
        converge_by ("run #{ command } to add route") do
          run_command( :command => command )
          Chef::Log.info("#{@new_resource} added")
        end
      end

      #for now we always write the file (ugly but its what it is)
      generate_config
    end

action_delete() click to toggle source

    # File lib/chef/provider/route.rb, line 145
    def action_delete
      if is_running
        command = generate_command(:delete)
        converge_by ("run #{ command } to delete route ") do
          run_command( :command => command )
          Chef::Log.info("#{@new_resource} removed")
        end
      else
        Chef::Log.debug("#{@new_resource} route does not exist - nothing to do")
      end
    end

config_file_contents(action, options={}) click to toggle source

    # File lib/chef/provider/route.rb, line 211
    def config_file_contents(action, options={})
      content = ''
      case action
      when :add
        content << "#{options[:target]}"
        content << "/#{options[:netmask]}" if options[:netmask]
        content << " via #{options[:gateway]}" if options[:gateway]
        content << "\n"
      end

      return content
    end

generate_command(action) click to toggle source

    # File lib/chef/provider/route.rb, line 193
    def generate_command(action)
      common_route_items = ''
      common_route_items << "/#{MASK[@new_resource.netmask.to_s]}" if @new_resource.netmask
      common_route_items << " via #{@new_resource.gateway} " if @new_resource.gateway

      case action
      when :add
        command = "ip route replace #{@new_resource.target}"
        command << common_route_items
        command << " dev #{@new_resource.device} " if @new_resource.device
      when :delete
        command = "ip route delete #{@new_resource.target}"
        command << common_route_items
      end

      return command
    end

generate_config() click to toggle source

    # File lib/chef/provider/route.rb, line 157
    def generate_config
      conf = Hash.new
      case node[:platform]
      when "centos", "redhat", "fedora"
        # walk the collection
        run_context.resource_collection.each do |resource|
          if resource.is_a? Chef::Resource::Route
            # default to eth0
            if resource.device
              dev = resource.device
            else
              dev = "eth0"
            end

            conf[dev] = String.new if conf[dev].nil?
            if resource.action == :add
              conf[dev] << config_file_contents(:add, :target => resource.target, :netmask => resource.netmask, :gateway => resource.gateway)
            else
              # need to do this for the case when the last route on an int
              # is removed
              conf[dev] << config_file_contents(:delete)
            end
          end
        end
        conf.each do |k, v|
          network_file_name = "/etc/sysconfig/network-scripts/route-#{k}"
          converge_by ("write route route.#{k}\n#{conf[k]} to #{ network_file_name }") do
            network_file = ::File.new(network_file_name, "w")
            network_file.puts(conf[k])
            Chef::Log.debug("#{@new_resource} writing route.#{k}\n#{conf[k]}")
            network_file.close
          end
        end
      end
    end

hex2ip(hex_data) click to toggle source

    # File lib/chef/provider/route.rb, line 63
    def hex2ip(hex_data)
      # Cleanup hex data
      hex_ip = hex_data.to_s.downcase.gsub(/[^0-9a-f]/, '')

      # Check hex data format (IP is a 32bit integer, so should be 8 chars long)
      return nil if hex_ip.length != hex_data.length || hex_ip.length != 8

      # Extract octets from hex data
      octets = hex_ip.scan(/../).reverse.collect { |octet| [octet].pack('H2').unpack("C").first }

      # Validate IP
      ip = octets.join('.')
      begin
        IPAddr.new(ip, Socket::AF_INET).to_s
      rescue ArgumentError
        Chef::Log.debug("Invalid IP address data: hex=#{hex_ip}, ip=#{ip}")
        return nil
      end
    end

load_current_resource() click to toggle source

    # File lib/chef/provider/route.rb, line 87
    def load_current_resource
      self.is_running = false

      # cidr or quad dot mask
      if @new_resource.netmask
        new_ip = IPAddr.new("#{@new_resource.target}/#{@new_resource.netmask}")
      else
        new_ip = IPAddr.new(@new_resource.target)
      end

      # For linux, we use /proc/net/route file to read proc table info
      if node[:os] == "linux"
        route_file = ::File.open("/proc/net/route", "r")

        # Read all routes
        while (line = route_file.gets)
          # Get all the fields for a route
          iface,destination,gateway,flags,refcnt,use,metric,mask,mtu,window,irtt = line.split

          # Convert hex-encoded values to quad-dotted notation (e.g. 0064A8C0 => 192.168.100.0)
          destination = hex2ip(destination)
          gateway = hex2ip(gateway)
          mask = hex2ip(mask)

          # Skip formatting lines (header, etc)
          next unless destination && gateway && mask
          Chef::Log.debug("#{@new_resource} system has route: dest=#{destination} mask=#{mask} gw=#{gateway}")

          # check if what were trying to configure is already there
          # use an ipaddr object with ip/mask this way we can have
          # a new resource be in cidr format (i don't feel like
          # expanding bitmask by hand.
          #
          running_ip = IPAddr.new("#{destination}/#{mask}")
          Chef::Log.debug("#{@new_resource} new ip: #{new_ip.inspect} running ip: #{running_ip.inspect}")
          self.is_running = true if running_ip == new_ip && gateway == @new_resource.gateway
        end

        route_file.close
      end
    end

whyrun_supported?() click to toggle source

    # File lib/chef/provider/route.rb, line 83
    def whyrun_supported?
      true
    end

[Validate]

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